Considerable computer applications have occurred in a variety of mechanical engineering courses including statics, dynamics, kinematics, controls and vibrations using the dynamics simulation package Working Model. Its ease of use and short start-up time allows students to quickly create simulations of interest. Examples of such simulations in our vibrations course have included the motions of beam structures, accelerometers, aircraft wings and manufacturing machines.  A specific machine vibrations problem was to consider the induced vibrations of a milling machine due to vertical floor motion in the manufacturing plant.  Primary concern was with machining quality, and this is determined by the relative motion between the workpiece and cutting tool.  Details on the machine dimensions, mass properties, stiffnesses, damping, maximum floor vibration, and the excitation frequency range were specified.  An example animation of a Working Model simulation is shown below.

                     (Displacements Exaggerated)